Looking for a data logger, but it does not necessarily have to be a brand new one? Why don't you have a look at our page with 'Used Equipment'?
CO2, TEMPERATURE. AND HUMIDITY COMBINED
Askey Dataloggers introduces the pSense. A new portable instrument that measures and displays carbon dioxide (CO2) and temperature simultaneously. The pSense-RH model also shows humidity.
It's the ideal instrument for conducting indoor air quality measurements.